What does the following sentence mean?

After the threadbare deliberations on the subject, the Vice Chancellor authorised the chairmen to co-opt any member.

I'd like to know what meaning the words THREADBARE DELIBERATIONS convey in the above sentence, please.

Thanking you in anticipation for your help on this!

Question

What does the following sentence mean?

After the threadbare deliberations on the subject, the Vice Chancellor authorised the chairmen  to co-opt any member.

I'd like to know what meaning the words THREADBARE DELIBERATIONS convey in the above sentence, please.

Thanking you in anticipation for your help on this!

Answer

"...Threadbare deliberations..."

= Very brief discussions (in fact, too brief, and lacking in detail...)